Problems with F3-12800CL7D-4GBRH and GA-P55 mobos

[giddyup69]

i just built 3 computers this week for myself and 2 friends.

2 of the computers are as follows:
GIGABYTE MB GA-P55M-UD2
Intel Core i5 750 2.66Ghz

and the other computer is running:
GIGABYTE GA-P55-UD6
Intel Core i7 860 2.8Ghz

both computers have windows 7 x64 ultimate.

all 3 computers have the same problem.
-random shutdowns.
-sometimes a memory dump is performed. when it does the error from windows is a "kernal power 41 error"
-biggest issue i find is that running prime 95 .... it usually fails within first 15 minutes on all cpu cores

i first started bios settings using xmp profile 1 for the ram... everything else was set to default settings. then i tried applying the settings from this thread:
http://www.gskill.us/forum/showthread.php?t=2230
then i tried my own trial and error on various settings.

yet i'm still getting the usual crashes and prime 95 keeps failing.

if i run the ram on auto settings and slower timings... the computers run fine including a stable prime 95 (ran for at least an hour).

these memory modules are advertised as running at 7-7-7-24 @ 1600.... yet no matter what i try they absolutely do not seem to want to run stable at these given settings. what am i missing here? is there something wrong with the ram? i can understand possibly having problems with one of the sticks on a single computer.... but all 3 computers are behaving the same.

looking for help... i'm getting to the point where i'd rather just return these and go with another manufacturer.

very disappointed user here.

[GSKILL TECH]

Use this for the i5 750:

Advanced CPU Features:
CPU Clock Ratio ................................ [17x]
Intel(R) Turbo Boost Tech .................. [Disabled]
CPU Cores Enabled ............................ [All]
CPU Multi Threading .......................... [Enabled]
C3/C6/C7 State Support ................... [Auto]
CPU Enhanced Halt (C1E) ................... [Auto]
C3/C6/C7 State Support .................... [Auto]
CPU Thermal Monitor ......................... [Auto]
CPU EIST Function ............................ [Disabled]
Virtualization Technology ................... [Disabled]
Bi-Directional PROCHOT ..................... [Auto]


Uncore & QPI Features:
QPI Clock Ratio ...........................................AUTO
QPI Link Speed .............................. AUTO
Uncore Clock Ratio...........................AUTO
Uncore Frequency .......................... AUTO
Isonchronous Frequency ..................[Enabled]


Standard Clock Control:
Base Clock (BCLK) Control ................ [Enabled]
BCLK Frequency (MHz) ..................... 160
PCI Express Frequency (MHz) ........... [100]

C.I.A.2 [Disabled]

Advanced Clock Control:
CPU Clock Drive ..............................[800mV]
PCI Express Clock Drive ................... [900mV]
CPU Clock Skew ............................. [0ps]


Advanced DRAM Features:
Extreme Memory Profile (X.M.P) ......... [Disabled]
System Memory Multiplier (SPD) ........ [10.0]
Performance Enhance ...................... [Standard]
DRAM Timing Selectable (SPD) .......... [Expert]

Channel A + B + C

Channel A Timing Settings:
##Channel A Standard Timing Control##
CAS Latency Time ...................... 7
tRCD ....................................... 7
tRP ......................................... 7
tRAS ....................................... 24

##Channel A Advanced Timing Control##
Command Rate (CMD) ................ 2

Advanced Voltage Control:

DRAM
DRAM Voltage 1.500v .............. 1.650V


Use these for the i7 860:

Advanced CPU Features:
CPU Clock Ratio ................................ [21x]
Intel(R) Turbo Boost Tech .................. [Disabled]
CPU Cores Enabled ............................ [All]
CPU Multi Threading .......................... [Enabled]
C3/C6/C7 State Support ................... [Auto]
CPU Enhanced Halt (C1E) ................... [Auto]
C3/C6/C7 State Support .................... [Auto]
CPU Thermal Monitor ......................... [Auto]
CPU EIST Function ............................ [Disabled]
Virtualization Technology ................... [Disabled]
Bi-Directional PROCHOT ..................... [Auto]


Uncore & QPI Features:
QPI Clock Ratio ...........................................AUTO
QPI Link Speed .............................. AUTO
Uncore Clock Ratio...........................AUTO
Uncore Frequency .......................... AUTO
Isonchronous Frequency ..................[Enabled]


Standard Clock Control:
Base Clock (BCLK) Control ................ [Enabled]
BCLK Frequency (MHz) ..................... 133
PCI Express Frequency (MHz) ........... [100]

C.I.A.2 [Disabled]

Advanced Clock Control:
CPU Clock Drive ..............................[800mV]
PCI Express Clock Drive ................... [900mV]
CPU Clock Skew ............................. [0ps]


Advanced DRAM Features:
Extreme Memory Profile (X.M.P) ......... [Disabled]
System Memory Multiplier (SPD) ........ [12.0]
Performance Enhance ...................... [Standard]
DRAM Timing Selectable (SPD) .......... [Expert]

Channel A + B + C

Channel A Timing Settings:
##Channel A Standard Timing Control##
CAS Latency Time ...................... 7
tRCD ....................................... 7
tRP ......................................... 7
tRAS ....................................... 24

##Channel A Advanced Timing Control##

Command Rate (CMD) ................ 2

Advanced Voltage Control:

DRAM
DRAM Voltage 1.500v .............. 1.650V

Keep me posted on the results. If you continue to have issues, try testing them individually to make sure the memory modules aren't defective.

Also, Gigabyte has been releasing a lot of BIOS revisions to fix bugs, so check to see if you have the latest.

Thank you
GSKILL SUPPORT

[giddyup69]

thanks... i will experiment with the settings tonight and hopefully have some better results. appreciate your time in this matter.

[giddyup69]

looks like at least one of the sticks is defective.

1 will pass prime 95 tests at the specified 7-7-7-24 but the other one is failing.

how do i start an rma ?


ps. i am still in the process of testing the other 2 computers.

[GSKILL TECH]

If you are within the 30 day NewEgg period, simply contact them for an RMA exchange. Otherwise, please visit our website at http://www.gskill.com/rma.php for complete RMA procedures. You will need to download and complete the RMA Form then email it to rma@gskill.com for an RMA number to return the defective memory.

Thank you
GSKILL SUPPORT

[giddyup69]

thanks...

i just tested the other 2 computers with your settings... and they now both pass prime 95 with flying colours. it seems that it is just 1 batch of sticks that is bad.

i will try to return them from where i bought them.

thanks for all the help.